IP Library › Granted Patent US 12,234,431
Granted Patent B2
US 12,234,431 · App. 17/204,976 · Granted Feb 25, 2025

Water-soluble unit dose articles comprising water-soluble fibrous structures and particles

Inventors: Mark Robert Sivik (Mason, OH); Frank William Denome (Cincinnati, OH); Michael Joseph Dipaola (Cincinnati, OH); Rui Shen (Beijing, CN); Stephen Robert Glassmeyer (Cincinnati, OH)
Assignee: The Procter & Gamble Company
C11D3/3409C11D1/06C11D1/22C11D3/3723C11D3/386C11D3/395C11D3/40C11D3/505C11D17/042C11D17/06C11D17/065
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Quick Facts
Patent No.
US 12,234,431
App. No.
17/204,976
Granted
Feb 25, 2025
Kind
B2
Abstract

Described herein is a water-soluble unit dose with a particle having a ratio of Linear Alkylbenzene Sulfonate to Alkylethoxylated Sulfate of greater than 1.

Claims (22)

1. A water-soluble unit dose article comprising a water-soluble fibrous structure comprising a particle comprising a ratio by weight of Linear Alkylbenzene Sulfonate to Alkylethoxylated Sulfate of greater than 1.2, wherein the particle exhibits a density of less than 500 grams per liter and exhibits a particle size distribution such that D10 is greater than about 300 micrometers and the D90 is less than about 1100 micrometers, wherein the linear alkylbenzene sulfonate has a carbon chain length of C6-C20 and wherein the alkylethoxylated sulfate has a carbon chain length of C12-C18 and an average degree of the ethoxylation from about 0.5 to about 3.0.

2. The water-soluble unit dose article of claim 1 , wherein said water-soluble unit dose article comprises less than 5% by weight of an inorganic dissolution aid.

3. The water-soluble unit dose article of claim 1 , wherein the particle further comprises between 0.001% and 1% by weight of an inorganic dissolution aid.

4. The water-soluble unit dose article of claim 2 , wherein the inorganic dissolution aid comprises zeolite.

5. The water-soluble unit dose article of claim 1 , wherein the alkylethoxylated sulfate preferably has an average degree of ethoxylation of from about 1 to about 3.5.

6. The water-soluble unit dose of claim 1 , wherein the water-soluble unit dose further comprises a rheology modifier, wherein the rheology modifier is an alkoxylated polyalkyleneimine, wherein said alkoxylated polyalkyleneimine has a polyalkyleneimine core with one or more alkoxy side chains bonded to at least one nitrogen atom in the polyalkyleneimine core, an ethylene oxide-propylene oxide-ethylene oxide (EOx1POyEOx2) triblock copolymer wherein each of x1 and x2 is in the range of about 2 to about 140 and y is in the range of from about 15 to about 70, and mixtures thereof.

7. The water-soluble unit dose article of claim 6 , wherein said alkoxylated polyalkyleneimine comprises ethoxylate (EO) groups, propoxylate (PO) groups, or combinations thereof, preferably ethoxylate (EO) groups.

8. The water-soluble unit dose article of claim 1 , wherein the particle exhibits a particle size distribution such that D10 is between 300 micrometers and 500 micrometers.

9. The water-soluble unit dose article of claim 1 , further comprising perfume microcapsules.

10. The water-soluble unit dose article of claim 1 , further comprising a hueing agent.

11. The water-soluble unit dose article of claim 1 , further comprising a bleaching agent.

12. The water-soluble unit dose article of claim 1 , further comprising an enzyme.

13. The water-soluble unit dose article of claim 1 , further comprising a printed area.

14. The water-soluble unit dose article of claim 1 , further comprising an aversive agent.

15. The water-soluble unit dose article of claim 1 , further comprising a nonionic surfactant.

16. A water-soluble unit dose article comprising a water-soluble fibrous structure comprising a particle comprising a ratio by weight of Linear Alkylbenzene Sulfonate to Alkylethoxylated Sulfate of between 1.2 and 2.0, wherein water-soluble unit dose comprises a rheology modifier, wherein the rheology modifier is an alkoxylated polyalkyleneimine, wherein said alkoxylated polyalkyleneimine has a polyalkyleneimine core with one or more alkoxy side chains bonded to at least one nitrogen atom in the polyalkyleneimine core, an ethylene oxide-propylene oxide-ethylene oxide (EOx1POyEOx2) triblock copolymer wherein each of x1 and x2 is in the range of about 2 to about 140 and y is in the range of from about 15 to about 70, and mixtures thereof: wherein the particle has a density of less than 500 g/L.

17. The water-soluble unit dose article of claim 16 , wherein the particle further comprises between 0.001% and 1% by weight of an inorganic dissolution aid.

18. The water-soluble unit dose article of claim 16 , wherein the particle exhibits a particle size distribution such that D10 is greater than about 300 micrometers and the D90 is less than about 1100.

19. The water-soluble unit dose of claim 1 , wherein the particle has a density of about 250 g/L to about 400 g/L.

20. The water-soluble unit dose article of claim 16 , wherein the particle has a density of about 250 g/L to about 400 g/L.

21. The water-soluble unit dose article of claim 1 , wherein the linear alkylbenzene sulfonate comprises a carbon chain length of from C11-C18.

22. The water-soluble unit dose article of claim 1 , wherein the linear alkylbenzene sulfonate comprises a carbon chain length of from C11-C14.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 18, 2021
From: SIVIK, MARK ROBERT; DENOME, FRANK WILLIAM; DIPAOLA, MICHAEL JOSEPH; GLASSMEYER, STEPHEN ROBERT; SHEN, RUI
To: THE PROCTER AND GAMBLE COMPANY
Reel/Frame 055632/0304 →
Continuity (4)
Continuation PCTCN2019109818 · Oct 3, 2019
Provisional Application 62740743 · Oct 3, 2018
Provisional Application 62796730 · Jan 25, 2019
Related Publication 20210222088A1 · Jul 22, 2021
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